Inductor-generator for ignition purposes.



H. J. PODLESAK & T. E. POD-LESAK.

RATOR FORIGNITION PURPOSES. APPLICATION FILED JAN. 28, 1908.

IN DUGTOR GENE Patented Feb. 8, 1910.

HENRY JOSEPH PoDLEsK,

OF CHICAGO, ILLINOIS, .AND TESLA EMIL PODLSAK, OF

MORRISTOWN, NEW JERSEY. i

-INEUCTOR-GENERATOR FOR IGNITION PURPOSES.

Specification of Letters Patent.

Patented Feb. s, 1910.

Original application led September 25, 1901, Serial No. 76,559. Dividedand this application filed January' 28, 1908. Serial No. 413,069.

To all whom it may concern:

e it known that we, HENRY JOSEPH- lonLnsir and TEsLA EMIL PoDLsAK,residing at Chicago, 1n the county of Cook and State of Illinois, andMorristown, county of Morris, State of New Jersey, respectively,

have invented certain new and useful lmprovements in Inductor-Generatorsfor Ignition Purposes, of which the following is a specification,reference being had thereln to the accompanying drawings.

This invention relates to ignition apparatus for -internal combustionengines.

The subject matter herein presented is for afdivision of the subjectmatter presented in our application, Serial No. 76,559, filed September25th, 1.901, for inductor generators for ignition purposes.

One of the objects of our invention is to provide an inductor alternatorwhich is readily adaptable to all classes of internal combustion motors,such as automobile, marine, and stationary motors, and to the specialrequirements of each class, and is readily adjustable for varying theperiod of generation of maximum electro-motive force relative to theposition-of a -piston within an engine cylinder.

Another object of our invention is to so connect and correlateanelectric generator to the ignition apparatus of an internal combustionmotor, that the ignition apparatus and the said generator' aresimultaneously adjusted for the purpose of causing a. spark to occurearlier or later in the stroke of the inotor piston. This simultaneousadjustment' of the electric generator with the ignition apparatus is forthe purpose of insuring that the generator will-produce the requisiteelectro-motive force for any position of adjustment of' the ignitionappa-I ratus. l

Still another object of our invention 1s to `arrange and mount anelectric generator in j the fly wheel of an engine 1n such manner thatthe parts of the generator will be completely protected.

Figure 1 is a side elevation of a motor fitted with an inductoralternator embodying our invention, the fly wheel of the motor beingshown partly broken away and partly in section. Fig. 2 is a section onthe line 2 2, Fig. 1. Fig. 3 is an end elevation of parts of the igniterapparatus, detached. Fig. t-is a side view of the parts shown in Fig. 3.

In the drawings-A. represents an internal combustion motor of any wellknown construction.

B indicates the crank shaft bearing on the fly wheel side of the motor,the crank shaft itself being represented by 18.

F is the fly wheel of the motor having an inwardly Aextending flange F.

l indicates a permanent magnet, preferably horseshoe or U-shaped inform. It is composed of as many magnet sections, arranged in series, asmay be required to establish the desired density of magnetic field.

4 is a frame, preferably of 'non-magnetic material, and employed toposition and support in proper relation to each other the normallystationary parts of our inductor alternator. In the drawings, thissupportingiand positioning frame is mounted upon the crank shaft bearingB, and is capable of adjustment about the axis of the said crank shaft.

. 9 are clamp pieces or cleats arranged to bear against the outermostmagnet section ineach series, and 7 are bolts or screws eX- tendingthrough said cleats and into the frame 4, and adapted to clamp or bindthe said frame and permanent magnet together.

21 are pole pieces composed of afsuitable number of punehings. orlaminae. A pair of these pole pieces is preferably used, assembled,.oneat either-*side of a suitable center piece or spacing piece 10 ofnon-magnetic.

material, and suitabl bolted thereto by mea-ns of bolts 5. Thisnon-magnetic spacin'piece 10 is suitably secured to the -frame 4 ymeansof bolts or screws 6 and l1,-

-(shown in dotted lines), so as to hold the sev - laminated pole pieces21 in close magnetic Contact with the ends orpoles of the permapolarfaces polar faces,

' nent magnet-sections- Each one ofthe pole pieceshas a air of polarprojections 12, 12, the former o which serves as a coil core upon whicha winding or coil 2O of insulatedwire is' slipped, and to which the saidcoil is suitably secured.` The coil core 12 on each pole piece is spacedby a suitable air gap from the adjacent polar projection 12 on said polepiece. The outer faces or polar faces of the said polar projections 12,12, are suitably shaped to con` form to the path of travel of a suitableinductor, hereinafter described. The -polar faces on the polarprojections 12 are designated by 2, and hereinafter referred to asexciting polar faces, and the polar faces on the polar projections 12are designated by' 3, and hereinafter referred to as generating polarfaces.

19 is an inductor, refera'bly formed of punchings or laminae of suitablemetal. lThis inductor is adapted to be rotated vso as to have one of itsfaces pass over and-'elo ly adjacent to the exciting polar faces 2andthe generating polar faces 3', by mere mechanical clearance, or, inother words, as close to said as mechanical conditions will permit. Wehave shown the said inductor 19 as secured to and carried by the flangeF of the'fly wheel F of the motor. The polar faces 2, 3, and the face ofthe inductor which passes adjacent tothem are shaped to the arc of acircle' struck from the axis of the crank shaft as a center. Normallythe lines of 1 magnetic force emanate in a scattered way frqm all sidesof the ma net and for about one-half of its length rom its free ends,and some of these lines of force emanate from the pole pieces. Theinductbr 19, in operation, first spans the exciting polar` faces 2 andcauses the concentration of a dense flow of magnetic lines of force,'asubstantial magnetic short circuit, between the polar projections 12,12', of the laminated pole pieces. The inductor then moves across theair. gap between the exciting polar facesand the generating polar facesand causes a rapid and substantially complete diversion of the magneticflux density, first concentrated across .the exciting polar faces, intoand through the coil cores 12 and across the generating'polar faces, soas to establish a circuit across the V generating polar faces. Theinductor the'n leaves the generating and, the magnetic flux densityinduction windings is rapidly through \the due to the fact that thelines of diminlshed,

magnetic force. instantly seek the path ofl least reluctance between themagnet poles.

In Figs. l and 2, the frame 4 of the invdrawings,- more or substantialmagnetic short v ductor alternator is shown pivoted or jour# naled onthe bearing B of the crank shaft at one side of the motor, ashereinbefore mentioned, in order that it may be oscillated through apart of a revolution to vary the instant of generation of maximumelectromotive force, so as to accommodate the generator forv operation.with mechanism for varying the period of ignition Within the enginecylinder.

13 is a link connected at its lower end With the generator frame, andhaving its upper end suitably "connected to one end of a lever ,14,which is pivoted at 15 to the frame of the motor.

ji-The mechanism for advancing or retarding the time of ignition'withinthe engine cy in der may be of any suitable and Well known type. For thepurpose of illustrating our invention, we have shown in the less'diagrammatically, such a mechanism. y K isa cam connected to move witha bell crank lever V, said lever being pivoted at Y to the cylinder ofthe motor, and adapted to be oscillated and retained in any desiredposition of adjustment by the engagement of its downwardly extending armwith one of the teeth of a rack section Z.

16 is a link connected at its lowerend to' the upper end of the" lever14, and having its upper end connected to the outer end of the arm y' ofthe bell crank lever V.

The make and break ignition mechanism for the engine may be of any Wellknown and suitable construction. lVe have shown it as embodying thegeneral features of construction and operation disclosed in LettersPatent of the United States No. 630,624, to C. H. Morse, Jr., and F. G.Hobart, for gas en ine igniter, dated August, 8th, 189g).-

is a suitably insulated stationary electrode. I

M is the movable electrode having a shaft m extending through one wallof the cylinder. Upon the outer vend of the shaft m 1s loosely mounted asleeve m having an upwardly projecting arm H and a.' aterally projectingarm z.. n'

It is a spring having one end secured to the freeend of the arm It anditsy-x other end connected to the motor cylinder and ar- ,ranged tonormally hold the electrodes M and S out of contact with each other.

M is a coiled spring arranged around the electrode shaft m and betweenits outer end and the sleeve m thereon, so as toform a Hexibleconnection between the :said sleeve and shaft, whi'ch will permit thesleeve to rotate relative to the shaft against the action of saidspring. I

'T is a reciprocable -trip rod, which has one end mounted on aneccentric X carried by the shaft L, the latter being driven from asuitable member of the motor.

upper end of the electrode-operating arm H. During the loperation of themotor, the vtrip rod T at the proper instant, engages the aim H andmoves the said arm so as to cause the j movable electrode M to engagethe station- The trip rod then passes E economize space, which is ofconsiderable immediately causestthe separation of the; electrode M fromthe electrode S, at which interval the spark occurs between theelectrodes. By adjusting the cam K, the trip I rod Tis caused to bringabout the separation of the electrodes and t-lie consequent;

ary electrode S. or trips off the arm H, and the spring L creation of aspark earlier or later in the stroke of the piston.

Adjusting the bell crank lever Y to the L left, or clockwise, will turnthe cam K so as to eleva-te the free end of the trip rod T. This willcause the earlier disengagement. of the electrodes Within the cylinder,thusIadvancing the time of ignition. Adjusting the bell crank lever Y tothe right, or anti-clockwise, Will relatively lower the free end of thetrip rod T, which Will cause a later separat-ion of the electrodesWithin the engine cylinder and the consequent. retardation of the timeof ignition. The connections -be- `tween the said bell crank lever V andthe frame 4 are so proportioned and correlated that, as the period ofignition in the cylinder is changed by the operation of the bell cranklever to either advance or retard the spark, l the electric generator isalso shifted or adjusted into a position to generate the iequisiteelectro-motive force at the moment the electrodes of the make and breakapparatus in the cylinder separate to produce the desired spark.

W is a Weight secured between the arms 17 extending from the frame 4,the said Weight being suitable to counterbalance the Weight carried atthe opposite end of the said frame 4. 22 is a spring having its lowerend at.- tached to a bracket 27 carried by the motor frame, and itsupper end secured to an adjusting screw 26 which extends through alcross bar 28 carried by the arm 17. This spring serves to supplementthe Weight `W and affords an additional means for facilitating theadjustment of the electric generator.

The Winding on each pole piece may be in one or more separate coils ofany suitable construction, ,all of which are suitably and properlyconnected together, either in parallel or in series, as may be desired.A suitable connection'from the terminals of the The driving connectionfor the shaft L has, for the sake of clearness, notbeen'shown. The triprod T rests upon and is guided by the cam K, i and at its free end isarranged to `engage the i importance in small motors, especially forautomobile and marine work.

"liatwe claim is l. In an apparatus of the class described,

the combination of an igniter-mechanism associated with aninternal-combustion engine, a shaft projecting from the enginecasing, amagnetic field-frame adjustably mounted upon said shaftand provided witha Winding, a movable inductor for `Varying the magnetic flux throughsaid Winding, an arni pivotally connected at one end ivitlrsaidfield-frame and at the other end with said igniter-mechanism,` and meansfor actuat ing said arm for simultaneously adjusting said iinter-mechanism and said field-frame.

2. n an apparatus of the class described, the combination of anigniter-mechanism associated with an linternal-combustion engine, ashaft projecting from the engine-- casing, a frame of non-magneticmaterial adjustably mounted upon said shaft, a permanent magnet securedto said frame and provided With a Winding, a movable inductor forvarying the magnetic flux through said Winding, an aim pivotallyconnected at one end with said field-frame and at the other end withsaid igniter-inechanism. and means for actuating said arm forsimultaneously adjusting said igniter-me'clianism and said field-frame.f

3. In an apparatus of the class described, the combination of anigniter-nicchanisni associated with an internal -combustion engine, ashaft projecting from theengine casing, a magnet-ic field-frameadjustably mounted upon said shaft and provided with a Winding', aflywheel. supported by said shaft, an inductor carried by said flywheelfor varying the magnetic flux through said winding, an arm pivotallyconnected at one end with said field-frame and vat the other end withsaid igniter-mechanism, and means for actuating said arm forsimultaneously adjusting said igniter-mechanismand said the stationaryelectrode S with the generat.-.

casing, a frameof non-magnetic material ardjustably niounted upon saidshaft, @per-vl manent magnet secured .to said frame and provided with aWinding, a Hywheel Sup-I ported by said shaft, aninductor carried bysaid ywhee for varying the magnetic ux- In Witness whereofx We in thepresence of two Witnesses. ,A

HENRY' JOSEPH PODLESAK. TESLA EMIL PODLSAK'.y v Witnesses to thesignature of Henry J0- seph Podlek: i

through said winding, an arm pivotally J. SOBEK connected at me end tosaid frame and at F. PTEK. the other endwvith sald igniter-meehanism,`Witnesses to the signature Lof Tesla Emil and, means foractuating saidarm for simull' taneonsly adjusting said' igniter-mechanism and vsaideldd'lrmne.- ej f A Podlsak: LILLIAN B. SHERMAN, y l JOHNH. BolNsALL.

afx voursignatures,

